set_audio_channels
Description:
Set the number of audio channels in the this.
Passing a negative number will unset this property.
Parameters:
| this | |
| n_channels | 
           The number of channels  | 
      
Set the number of audio channels in the this.
Passing a negative number will unset this property.
| this | |
| n_channels | 
           The number of channels  |